Part of my point is that playing Pathfinder isn't abandoning a game that you played for twenty years. It's keeping going with the same game you played for the past decade or so. PF is not just a d20 game like True20 or FantasyCraft. It is D&D. Just like the poster says.
I truly hate 4e and I wish it had never been written. I still haven't switched to Pathfinder. I don't run a Pathfinder game. I guess I own 3.5. I ran a 4e campaign but since that ended I took a hiatus from roleplaying. When I began developing my next campaign world, they announced 5e. Would I have played Pathfinder if not? Maybe. More likely DCC, Hackmaster, or CoC.
I still feel a loyalty to the D&D brand. I want it to do well. I want it to be related to the game I started so long ago. So I hope for 5e. I think if 5e fails for me I'll just write my own game.
Here are my preferences
1. DM empowerment/open ended interpretation at the edges.
2. Gritty. Level Drain. Rust Monsters. etc...
3. A long long skill system. 3e's is inadequately short.
4. I like flexible options that are by area NOT class. So martial abilities are open to all characters. Magic is a common source tapped into in different ways.
5. Simulationist, process sim, no plot coupons or dissociative mechanics.
6. Flavor baked into powers. Essential common effects in stat block.
7. PCs are not Gods nor are they the centerpiece of the world. The world is a strange and marvelous place. PCs make their way in that world and some become heroes. Some just make their way.
I could go on but I think most of you would get the idea.